21142800
21,142,800 is an even composite number composed of five prime numbers multiplied together.
21142800 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred eighty divisors.
Prime factorization of 21142800:
24 × 32 × 52 × 7 × 839
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 5 × 7 × 839)See below for interesting mathematical facts about the number 21142800 from the Numbermatics database.
Names of 21142800
- Cardinal: 21142800 can be written as Twenty-one million, one hundred forty-two thousand, eight hundred.
Scientific notation
- Scientific notation: 2.11428 × 107
Factors of 21142800
Divisors of 21142800
- Number of divisors d(n): 180
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 25 28 30 35 36 40 42 45 48 50 56 60 63 70 72 75 80 84 90 100 105 112 120 126 140 144 150 168 175 180 200 210 225 240 252 280 300 315 336 350 360 400 420 450 504 525 560 600 630 700 720 839 840 900 1008 1050 1200 1260 1400 1575 1678 1680 1800 2100 2517 2520 2800 3150 3356 3600 4195 4200 5034 5040 5873 6300 6712 7551 8390 8400 10068 11746 12585 12600 13424 15102 16780 17619 20136 20975 23492 25170 25200 29365 30204 33560 35238 37755 40272 41950 46984 50340 52857 58730 60408 62925 67120 70476 75510 83900 88095 93968 100680 105714 117460 120816 125850 140952 146825 151020 167800 176190 188775 201360 211428 234920 251700 264285 281904 293650 302040 335600 352380 377550 422856 440475 469840 503400 528570 587300 604080 704760 755100 845712 880950 1006800 1057140 1174600 1321425 1409520 1510200 1761900 2114280 2349200 2642850 3020400 3523800 4228560 5285700 7047600 10571400 21142800
- Sum of all divisors σ(n): 83952960
- Sum of proper divisors (its aliquot sum) s(n): 62810160
- 21142800 is an abundant number, because the sum of its proper divisors (62810160) is greater than itself. Its abundance is 41667360
Bases of 21142800
- Binary: 10100001010011101000100002
- Hexadecimal: 0x1429D10
- Base-36: CL5W0
Squares and roots of 21142800
- 21142800 squared (211428002) is 447017991840000
- 21142800 cubed (211428003) is 9451211997874752000000
-
The
square root of 21142800 is 4598.1300547071 -
The
cube root of 21142800 is 276.5163616415
Scales and comparisons
How big is 21142800?- 21,142,800 seconds is equal to 34 weeks, 6 days, 17 hours.
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To count from 1 to 21,142,800 would take you about three days!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 21142800 cubic inches would be around 23 feet tall.
Recreational maths with 21142800
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